TFT liquid crystal display driving method and TFT liquid crystal display driving module

Abstract

To provide a TFT liquid crystal display driving method for realizing low electric power consumption compared to line inversion driving and dot inversion driving by means of improving cross talk, brightness non-uniformity in a perpendicular direction, and flicker in frame inversion driving. Write scanning to the TFT liquid crystal display is performed at a speed equal to several times a normal speed, and a pause period is formed thereafter having a length equal to several times the length of the write period. Further, by maintaining a signal electrode waveform during the pause period at a constant gray scale level, the difference between a display pattern integrated over one frame period and the value of the waveform integrated over one frame period becomes relatively small. In addition, by setting memory in a standby mode during the pause period, and by slowing an electric power source booster circuit clock, the energy consumption of a TFT liquid crystal display driving module decreases.

1 . A method of driving a TFT liquid crystal display comprising a plurality of signal lines and a plurality of scanning lines that intersect one another, and a pixel electrode and a switching element in the vicinity of each intersecting portion, the method comprising: 
 forming a scanning period and a pause period within one frame period;    wherein the pause period is longer than the scanning period.    
   
   
       2 . A method of driving a TFT liquid crystal display according to  claim 1 , wherein the polarity of a driving waveform applied to a liquid crystal layer reverses at every frame.  
   
   
       3 . A method of driving a TFT liquid crystal display according to  claim 1 , wherein electric potentials of the scanning lines are fixed to constant values during the pause period.  
   
   
       4 . A method of driving a TFT liquid crystal display according to  claim 1 , wherein the number of pause periods is equal to or greater than twice the number of scanning periods.  
   
   
       5 . A method of driving a TFT liquid crystal display according to  claim 1 , wherein a fixed period is established between the end of the pause period and the start of the subsequent scanning period, and wherein a first row of data is sent to the signal lines during the fixed period.  
   
   
       6 . A method of driving a TFT liquid crystal display according to  claim 1 , wherein during the pause period, memory is set to a standby mode, and a clock of a booster circuit of a power supply is slowed.  
   
   
       7 . A TFT liquid crystal display driving module that uses the method of driving a TFT liquid crystal panel according to  claim 1 .  
   
   
       8 . A TFT liquid crystal panel driver module according to  claim 7 , wherein output stages connected to the signal lines comprise mutually independent amplifiers.